A "dalliance" is a casual or non-serious involvement or relationship, often with a romantic nature, without any intention of forming a strong commitment or long-term bond. Full definition
Sam Rockwell, as charming as ever, will inevitably end up in some sort of dalliance with Knightley, an invisible check mark glancing across the screen on their first interaction. (ioncinema.com)
There are holes in your story about five lads who don't appear to ever drink, smoke, fight, curse or partake in romantic dalliances of any kind. (metacritic.com)
Beyond this winter's 15th mainline game, the Final Fantasy franchise has expanded beyond the traditional role - playing with dalliances in other genres. (gamasutra.com)